{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Physics 1 Problem Solutions 83

# Physics 1 Problem Solutions 83 - Chapt 7 Kinetic Energy and...

This preview shows page 1. Sign up to view the full content.

Chapt. 7 Kinetic Energy and Work 79 i) You exert 100 N of force in the direction of motion and push the block for 10 m. How much work have you done on the block? ii) Assuming you start the block from REST and no other forces do work, what is the final speed of the block? a) (i) 1000 J (ii) 4 m / s. b) (i) 10 J (ii) 5 m / s. c) (i) 10 J (ii) 10 m / s. d) (i) 1000 J (ii) 10 m / s. e) (i) 1000 J (ii) 6 . 3 m / s. Full-Answer Problems 007 qfull 00340 1 3 0 easy math: work and KE feat 1. You are pushing a 60 kg block across a frictionless surface—which is no mean feat in itself. a) You exert 100 N of force in the direction of motion and push the block for 30 m. How much work have you done on the block? Show how you got your answer. b) Assuming you start the block from REST and no other forces do work, what is the final kinetic energy and speed of the block? Show how you got your answer. 007 qfull 00350 1 3 0 easy math: work done on block on incline Extra keywords: (Ha-157:16e) 2. Power in physics is the rate per unit time of energy transferred or transformed. This is a general definition independent of the where the energy is coming from and where it is going too. If work
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern